---
title: "HVAC PT Chart — App Overview"
url: https://marlvel.ai/intel-report/productivity/hvac-pt-chart
category: Productivity
developer: Carmel Software Corporation
platforms: ios
rating: 4.0 (8 ratings)
pricing: free
report_level: overview
generated: 2026-04-28
last_verified: "2026-04-28T09:37:47.865Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** While the app is a highly functional, free reference tool, users report significant visibility issues when using the interface in dark mode.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Productivity |
| Rating | 4.0 ★ (8) |
| Pricing | free |
| Platforms | iOS |
| Latest Version (iOS) | 5.4 |
| Developer | Carmel Software Corporation |

<!-- SECTION: Summary -->
## What is HVAC PT Chart?

HVAC PT Chart is a utility for HVAC technicians that calculates pressure and temperature values for over 100 refrigerants. It distinguishes itself by offering both bubble and dew point data and the ability to export chart lists and properties via email.

<!-- SECTION: Key Features -->
## Key Features

- **Refrigerant Database**: Provides pressure-temperature lookups for over 100 common refrigerants, including azeotropic mixtures.
- **Bi-directional Calculation**: Allows users to input either temperature or pressure to retrieve the corresponding value.
- **Interactive Slider Control**: Features a slider interface for precise adjustment and real-time viewing of pressure and temperature data.
- **Data Export**: Enables users to email complete PT chart lists, refrigerant properties, and custom calculation results.

<!-- SECTION: Target Audience -->
## Who is it for?

Professional HVAC technicians and contractors requiring mobile field reference tools.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/hvac-pt-chart/id508212589?uo=4)
- [Full Intelligence Report](https://marlvel.ai/intel-report/productivity/hvac-pt-chart)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/productivity/hvac-pt-chart).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*